Sansi LED: Sustainable LED Lighting and Integrated LED Display

When it comes to tunnel lighting, brightness is just the tip of the iceberg. The unique environmental conditions of tunnels—such as high humidity, poor ventilation, and strong corrosive factors—impose much stricter requirements on lighting equipment. Ignoring these factors can lead to instability, shortened lifespan of fixtures, and even safety hazards. This article will guide you through the key aspects to consider in tunnel lighting.

Challenges of Humidity and Corrosive Environments

Tunnels typically have high humidity levels, especially those near coastal areas or regions rich in groundwater. Moist air can affect the electrical performance of lighting fixtures, cause internal short circuits, and reduce the overall lifespan of the lights. Additionally, the air inside tunnels may contain corrosive gases, particularly in industrial areas or marine tunnels, where salt spray and sulfur dioxide can accelerate the corrosion of both the fixture’s surface and internal components.

Solutions:Choose fixtures with an IP66 or higher protection rating to ensure they are waterproof and dustproof, preventing moisture from seeping in. Additionally, select products with WF2 anti-corrosion ratings, using materials like ceramics or aluminum alloys with special coatings to significantly extend the lifespan of the lighting equipment.

Lighting Safety and Visual Comfort

In tunnels, lighting needs to do more than just illuminate; it must ensure the visual comfort and safety of drivers. Excessively bright or uneven lighting can cause glare, posing risks to driving safety. Moreover, lighting systems should be dynamically adjusted based on tunnel zones, traffic flow, and environmental conditions to optimize energy efficiency and safety.

Recommended Parameters:

• Color Temperature: 4000K–5000K for a clear and comfortable visual experience.

• Color Rendering Index (CRI): >70 to ensure accurate color representation of objects and signs.

• Luminous Efficacy: ≥120 lm/W for high energy efficiency and reduced operational costs.

• Anti-Glare Design: Equip fixtures with anti-glare devices suitable for highway tunnels to minimize visual disturbances.

• Dynamic Lighting Control: Adjust brightness based on season, weather, time, and traffic flow to ensure optimal lighting conditions.

Adaptability and Long-Term Maintenance Assurance

Beyond performance, ease of installation and maintenance is crucial for tunnel lighting. Fixtures should feature adjustable mounting designs for flexible application across different tunnel structures. Cables and accessories must have moisture-proof insulation to ensure safe, long-term operation.

SANSI’s tunnel lighting products are equipped with IP66 protection ratings and WF2 anti-corrosion performance. They also support intelligent dynamic lighting control, ensuring long-term stability in complex environments.

Want to learn more about efficient and safe tunnel lighting solutions? Contact us today for customized solutions!